4-(2-Hydroxyethyl)-1-(4-methoxybenzoyl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one CAS 866018-44-2
| CAS No. | 866018-44-2 |
| Molecular Formula | C14H16N2O4 |
| Molecular Weight | 276.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-(2-Hydroxyethyl)-1-(4-methoxybenzoyl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one (CAS 866018-44-2), a certified reference material (molecular formula C14H16N2O4, MW 276.29 g/mol) for analytical method development and quality control.
The molecular framework of 4-(2-Hydroxyethyl)-1-(4-methoxybenzoyl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one (C14H16N2O4) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C14H16N2O4 |
| Molecular Weight | 276.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Related Hydroxyethyl Standards
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Recommended Standards
- 4-(2H-1,3-Benzodioxol-5-yl)-2-phenylpyrimidine (CAS 685106-68-7)
- 4-(Pyridin-3-ylmethylene)-2-((E)-styryl)oxazol-5(4H)-one (CAS 315694-89-4)
- 4-((Tert-butoxycarbonyl)amino)-1H-indole-3-carboxylic acid (CAS 885266-66-0)
- 4,6-Diphenyl-2-pyrimidinecarboxylic acid (CAS 6483-96-1)
- Iron (CAS 7439-89-6)
- 5,6-Dimethyl-2-phenylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 158501-30-5)
- (2-Isobutoxyphenyl)methanol (CAS 479669-72-2)
- 2-Bromo-N-ethyl-4,6-difluoroaniline (CAS 1097779-87-7)
- N-((2R,3R,4R,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-2-(((2R,3S,4S,5R)-2,4,5,6-tetrahydroxy-1-oxohexan-3-yl)oxy)tetrahydro-2H-pyran-3-yl)acetamide (CAS 97096-73-6)
- 1-Phenyl-2-(2-phenyloxazol-5-yl)ethanone (CAS 777060-64-7)
- Cyclohex-3-en-1-amine hydrochloride (CAS 22615-33-4)
- 1-Amino-5-chlorouracil (CAS 127984-94-5)
- BET bromodomain inhibitor (CAS 1505453-59-7)
- Semaglutide impurity 64 (CAS CATO-C4X-222664)
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